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vitfil [10]
2 years ago
8

Write a inequality for this

Mathematics
1 answer:
den301095 [7]2 years ago
6 0

Answer:

-2 < x

Step-by-step explanation:

A closed circle means less than or equal to, or greater than or equal to.

Since an open circle means greater than or less than, you have to look at which direction the arrow is facing.

With the arrow facing to the right, it means that -2 is less than x

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Is 8/10 greater than 1/2
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Math help !! :) thanks!
Ber [7]

X= (-7,12)

Y= (7,-9)

The distance between the x points is 14 units

we want a ratio of 3 to 4

for every 3 on one side there are 4 on the other for 7 total

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2 years ago
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Lana finished the race in 13.2 seconds . If 84 other girls ran in the event, approximately how many runners did she beat?
BabaBlast [244]

Complete question :

The 100m dah times in the girl's track meet were normally distributed with a mean of 13 seconds and a standard deviation of 0.3 seconds.

Lana finished the race in 13.2 seconds . If 84 other girls ran in the event, approximately how many runners did she beat?

Answer:

21 runners

Step-by-step explanation:

Mean, μ = 13 seconds

Standard deviation, σ = 0.3

Lana's race time = 13.2

We find the proportion of runners who had race time above 13.2 ;

Proportion of who had race tune above 13.2

P(x > 13.2)

Obtain the Zscore

Zscore = (x - μ) / σ

Z = (13.2 - 13) / 0.3

Zscore = 0.2 / 0.3 = 0.6667

P(Z > 0.6667) = 0.25239 (Z probability calculator)

This is about 0.25239 * 100 = 25.24% = 25% (nearest percent)

Hence, Number of runners Lana beat = 25% of total runners ;

0.25 * 84 = 21

Hence, Lana beat about 21 runners

6 0
3 years ago
A shipping company places circular labels on all of their products. Each label measures a 4 inch radius. If the company order 10
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Answer:502.4 Square inches are need.

Step-by-step explanation:

6 0
2 years ago
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